Spiral bar



June (21, 1927.

1,633,308 A. LE R. BOLTON SPIRAL BAR Filed March 15, 1923 2 sheets-sheetl /0 /2 a A L I W F'IG.1

FIG. 13

5/ mfa FLwj I INVENTOR.

FIG .14 J ATTORNEY]! June 21, A. LE R. BOLTON SPIRAL BAR Filed March 15,19 2 s I eats-s IG.1a

FIG.Z

Patented J Line, 21, 1927.

UNITED, STATES ARCHER LE ROY BOLTON,

OF NORTH ANDOVER, MASSACHUSETTS.

SPIRAL BAR.

Application filed March 15, 1928. Serial No. 625,268.

This invention relates to the plugs of Jordan engines.

I am well aware that numerous types of plugs have been proposed andused. Some are cast in one piece, others cast in several pieces, andothers are built up. I am also aware that it has been suggested that thebars of such plu could be arranged diagonally or at a sllght slant withthe axis of the plug.

I claim to be the first, however, to provide bars, whether detachable orintegral, ar ranged in a spiral or curve on such a plug.

The advantage of a spiral bar is that it helps to accelerate the passageof the stock, while its side faces can be at all points parallel with aradial line from the center of the plug thus avoiding retardin pocketssuch as must occur with a straight ar diagonally positioned.

By changing the curve, the rate of movement of the stock from one end tothe other can be regulated and if desired, the pitch or angle of thesides with reference to radial lines can be altered thus increasing ordecreasing the rolling action of the stock between the bars.

In the drawings, Figure 1 is a plan view of a straight bar which may beset diagonally in a plug.

Fig. 2 is a side elevation of such a straight bar cut away at the topand bottom to fit a groove of uniform depth in the plug and to project auniform distance from the surface thereof.

Fig. 3 is an end elevation of Fig. 2.

Fig. 4 is a plan view of a spiral bar, the spiral being exaggerated toshow the difference between a straight and a spiral bar.

Fig. 5 is a side elevation of Fig. 4.

Figs. 6 and 7 are end views of Fig. 4 from different positions to showthat there is no position in which it is possible to sight from one endto the other without seeing the spiral curve on one side or the other.

Fig. 8 is a diagram showing the difference in the position of the topedge of a spiral bar from a straight bar diagonally positioned.

Fi 9 is a plan viewof a spiral bar in whic the spiral is not uniform.

Fig. 10 is a plan view of a wood suitable for use with the bar shown inFig. 4.

Fig. 11 is an end view of Fig. 10.

Fig. 12 is a sectional view of a plug having a removable jacket with acontinuous body on which are built spiral bars and woods.

Fig. 13 is a side elevation of a plug jacket of skeleton constructionwith one spiral bar and one spiral wood in position.

Fig. 14 is a side elevation similar to Fig. 13 of a skeleton plug withone bar and one wood in position.

Fig. 15 is a side elevation of a plug with a continuous Jsurface inwhich are spiral grooves, in se eral of which are spiral bars separatedby spiral woods.

Fig. 16 is a section showing how a spiral bar made, for instance, ofsteel can be imbedded in other metal forming a plug,,such lranetalhaving been cast about the base of the Fig. 17 is a verticallongitudinal section of a plug with a continuous body and a removablecontinuous jacket forming part of which are cast bars.

Fig. 18 is a section of Fig. 17 on the line 1818.

Fig. 19 is a side elevation has spiral bars and which tinuous orskeleton faced plug body, a continuous or skeleton removable plug jacketbody and in which the bars may be cast integrally, fixed in slots withwoods between or otherwise formed.

Fig. 20 is a sectional fragment showin a plug with a continuous bodyintegral with which the bars are cast. 7

In the drawings, in Figs. 1, 2 and 3 at A, I show a straight bar whichhas been fitted into a straight slot arranged at a slight angle ordiagonally on the conical lug. This slotwas of uniform depth and theouter face of the bar was formed to project an equal distance at allpoints from the surface.

In Figs. 4, 5, 6 and 7, I show a curved or spiral bar suchas I proposeto use and of which I claim to be the inventor.

Itis observed that the sides 12 and 13 of bar A lie in parallel straightplanes, and that the inside face 15, 17 and outside face 14, 16 areparallel, the curves at 14, 15 near the end 10 being more than they areat 16, 17 near the end 11 on account of the conical shape of the plug.

With the bar shown in Figs. 4, 5, 6 and 7, however, while the side faces25 and 26 are parallel throughout their length, they are not in a flatplane, but as shown in Figs. 6 and 7 in looking from one end such as 21the other end cannot be alined.

of a plug which may have a con- Observing Fig. the topface 24 and thebottom face 27 may be parallel, they are also in what might be calledtwisted planes.

In Fig. 8, I show in full lines a bar such as B of spiral form locatedon the cone G running from the small end 7 to the large end 8. It willbe observed that the end 21 lies in a radial direction to the center ofthe plug as does also the end 20. With a straight bar such as A,however, as shown at 10, one end would be parallel to the other, but ifarranged diagonally as indicated, it would not lie in a radialdirection.

As it is highly desirable that there should be no pockets near one endof the plug rather than the other in which the stock might be caught, itwill be seen by examining Fig. 8 wherein the advantage of my spiralconstruction lies.

In Fig. 9 at D, I'show a spiral bar which, from ends 22 to end 23, doesnot follow a uni form curve but an increasing or decreasing curve. Itwill be obvious that by changing the curve from one end to the other Ican change the forcing action of the bars, accelerating or retarding therapidity of the passage of the stock.

In Fig. 10 at F, I show a suitable wood or wooden wedge for use betweenspiral bars of my design. It will be observed that the side faces 35 and36 are in twisted planes, and that from the small end 32 to the largeend 33 the woods are of a twisted wedge shape, the top faces 34 alsobeing wider than the bottom faces 37, as see Fig. 11.

I may use my spiral bars in the various combinations used. in connectionwith lugs. as, for instance, in Fig. 12 I show a p ug G having aremovable jacket H formed as a continuous body in suitable grooves 44 inwhich are set spiral bars B separated by woods F. This whole jacket Hcan be removed at pleasure.

In Fig. 13, I show a removable plug jacket of skeleton form built up ofrings 40, 40, 40, 40 in a manner similar to what is shown in applicationfor patent by me filed Feb. 8, 1923, Serial No. 617,811, pendingherewith, only a singlebar B and wood F being shown to indicate theconstruction. When such a built-up jacket is built up, however, it. canbe shipped as an unit, put in place and removed.

Fig. 14 is a side elevation of what is known as a skeleton plug made upof spiders 50, 50, 5O fixed to a shaft 51. This may have suitable slots,or the bars, such as B, may be fixed thereto in any well known manner,the woods F being suitably attached.

In Fig. 15, I show a plug 60 having a continuous face in which arespiral grooves 61 'in which are fixed the bars B, B. The woods F areforced in between them in the manknown where straight bars are used.

ner well 5, it will be seen that while In Fig. 16, I show how a spiralbar 64, which may be of high grade steel and has flanges 65 at thebottom, may be set in a groove, such as 67, in the jacket or plu 66,such groove 67 then being filled with abbitt metal 68.

In Fig. 17, I show a plug 71 with a continuous surface carried by shafton to which is'attached a continuous jacket 72 having the integralspiral bars 73.

Fig. 18 is a section on line 1818 of Fig. 17 and shows the constructionthereof.

Fig. 20 is a sectional view showing a plug 90 carried by shaft 92, suchplug being formed of a continuous cast metal body with spiral ribs orbars 91 cast integral therewith and projecting outwardly therefrom.

In Fig. 19, I show a shaft carrying at K .what may be any type of plugor any type of jacket. 82, 82 may be any of my various types of spiralbars, and 83, 83 may be woods or the metal between the bars.

I claim to be first to use 5 iral bars as distinguished from diagonalars in connection with the plug of a Jordan engine.

I claim:

1. The combination in a frusto-conical plug for Jordan engines of apermanent body, with a jacket detachable therefrom built up of askeleton jacket body, spiral bars fastened thereto and spiral woodsbetween said bars.

2. The combination in a frusto-conical plug for Jordan engines of apermanent body, with a jacket detachable therefrom built up of a jacketbody, spiral bars fas- Eened thereto and spiral woods between said 3.The combination in a. frusto-conical plug for Jordan engines of a bodywith spiral bars fastened thereto and spiral woods between said bars.

4. A covering for frusto-conical Jordan engine plugs including a. bodywith spiral bars projecting from the conical surface thereof.

5. A frusto-conical Jordan engine plug having spiral bars projectingfrom the conical surface thereof.

6. A spiral bar for frusto-conical Jordan engines.

7 A bodily removable frusto-conical jacket for a Jordan engine plughaving bars projecting from its outer surface, each forming part of anhelical volute curve and each of substantially rectangular crosssection.

8. A frusto-conical Jordan engine plug having bars each of substantiallyrectangular cross section projecting from the outer surface thereof eachbar forming part of an helical volute curve.

9. A bar for Jordan engine plugs of substantially rectangular crosssection and formed as part of an helical volute curve.

ARCHER LE ROY BOLTON.

